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Packet for Cu lab, naming and writing formulas, reaction types and ...

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3. How many products are present <strong>and</strong> what type of products ______________________________________________<br />

4. Is the <strong>reaction</strong> exothermic or endothermic? Explain your answer: _________________________________________<br />

5. Indicate if a precipitate <strong>for</strong>med: ___________________________________________________________________<br />

Station 3A<br />

Reaction: NH4)Cl + Na2(CO3)<br />

NH4)2(CO3) + NaCl<br />

1. Describe the evidence <strong>for</strong> chemical change you observed:<br />

_____________________________________________________________________________________________<br />

_____________________________________________________________________________________________<br />

2. How many reactants are present <strong>and</strong> what type of reactants _____________________________________________<br />

3. How many products are present <strong>and</strong> what type of products ______________________________________________<br />

4. Is the <strong>reaction</strong> exothermic or endothermic? Explain your answer: _________________________________________<br />

5. Indicate if a precipitate <strong>for</strong>med: ___________________________________________________________________<br />

Station 3B<br />

Reaction: CaCl2 + Na2(CO3)<br />

Ca(CO3) + NaCl<br />

1. Describe the evidence <strong>for</strong> chemical change you observed:<br />

_____________________________________________________________________________________________<br />

_____________________________________________________________________________________________<br />

2. How many reactants are present <strong>and</strong> what type of reactants _____________________________________________<br />

3. How many products are present <strong>and</strong> what type of products ______________________________________________<br />

4. Is the <strong>reaction</strong> exothermic or endothermic? Explain your answer: _________________________________________<br />

5. Indicate if a precipitate <strong>for</strong>med: ___________________________________________________________________

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